The new art of land measuring, or, A turnpike road to practical surveying : leading to a new and exact method of measuring and maping land, woods, waters, &c. by the catoptric sextant, and to cast up the same by the pen only ; also, to many new discoveries in laying out, dividing, and reducing of land ; to levelling for the conveyance of water, either in pipes or open canals ; together with an appendix, containing a new theory of the catoptric sextant ..